Oscillating floating type wind wave energy power generation device

Through the oscillating floating wind and wave energy power generation device, wave energy and offshore wind energy are combined, solving the problems of low efficiency and intermittent wind conversion of traditional wave energy converters, achieving efficient, stable and reliable power generation.

CN120042733APending Publication Date: 2025-05-27JIANGSU UNIV OF SCI & TECH
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Patent Information

Application Number
CN202510296563.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2025-05-27

AI Technical Summary

Technical Problem

Existing wave energy converters have low capture efficiency and narrow frequency bands, and intermittent offshore wind conversion, resulting in insufficient system efficiency and reliability.

Method used

The oscillating floating wind and wave energy power generation device is used to convert wave energy into mechanical energy through the underwater and water oscillating float wave energy conversion device, and the generator is driven to generate electrical energy through the air turbine. The device combines a semi-submersible floating platform and a photovoltaic power generation device to improve energy capture efficiency and the system's sea area adaptability.

Benefits of technology

Improves wave energy capture efficiency and offshore wind energy utilization, increases the stability and reliability of the system, reduces costs, and achieves more sustainable and efficient power output through a variety of energy sources.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an oscillation floating type wind wave energy power generation device which comprises a wind turbine, a tower drum, a semi-submersible floating platform, a photovoltaic power generation device, an oscillation floater type wave energy conversion device and a supporting frame flat plate. The oscillating floater type wave energy conversion device comprises an underwater oscillating floater type wave energy conversion device and an overwater oscillating floater type wave energy conversion device; the underwater oscillation floater type wave energy conversion device comprises a second oscillation floater, a piston rod and a third air cylinder. A limiting stopper is arranged on the piston rod; the third cylinder is connected with a ventilation pipe and an air turbine; the water oscillation floater type wave energy conversion device comprises a first oscillation floater, a first air cylinder, a second air cylinder, a first piston rod and a second piston rod. The first piston rod and the second piston rod are connected with a hinge connecting rod; and a first bolt and a second bolt of the limiter are screwed to form a concave semi-cylinder tangent to the outer surface of the piston rod. Wave energy is converted into electric energy, too fast water flow is avoided through the limiting stoppers, and the defects that current wave energy conversion is single and low in efficiency are overcome.
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Description

Technical Field

[0001] The present invention relates to the technical field of ocean wind energy and wave energy conversion, and particularly relates to an oscillating floating wind and wave energy power generation device. Background Art

[0002] In recent years, the global energy supply has become increasingly tense, and the call for environmental protection and emission reduction has gradually increased. Therefore, the development and utilization of clean energy are also imminent. How to utilize the energy in the ocean is the main research direction of energy in the world today. In particular, energy is directly related to national security, so it has great strategic significance.

[0003] In the current situation where bioenergy resources such as coal and oil are gradually scarce and the environmental situation is deteriorating day by day, the problem of how to effectively utilize the rich and renewable ocean energy is very important. Ocean energy mainly refers to the renewable energy in seawater, such as tidal energy, wave energy, temperature difference energy, salinity difference energy, ocean current energy, etc., which exist in the ocean in various forms. The wave energy conversion technology is to effectively combine mature mechanical and conversion technologies on the basis of the existing research on ocean wave energy conversion. Convert the inexhaustible wave energy on the vast coast into electric energy at low cost, and open up a new way to improve the energy shortage and environmental conditions.

[0004] Wave energy conversion technology refers to capturing wave energy and converting it into utilizable electric energy through an energy output system (Power Take-off, PTO). The wave energy capture system is also called a wave energy conversion system. The main problems that have traditionally restricted the development of wave energy converters are low capture efficiency and narrow frequency band, etc.

[0005] The wave energy conversion efficiency is related to many factors, such as the incident wave frequency, the shape of wave energy conversion, etc. How to combine an offshore wind turbine platform with a wave energy device to reduce costs and improve the output per unit space while sharing the ocean space, mooring system, power infrastructure and other basic component facilities; at the same time, how to compensate for the intermittency of offshore wind power conversion through wave energy conversion and increase the effective working hours of the hybrid system are technical problems that need to be solved urgently. Summary of the Invention

[0006] Objective of the Invention: Aiming at the disadvantages of low conversion efficiency and narrow frequency band of existing single wave energy converters, as well as the intermittency of current offshore wind power conversion and other deficiencies, the present invention proposes an oscillating floating wind and wave energy power generation device. The wave energy is converted into mechanical energy of piston movement through an underwater oscillating float type wave energy conversion device, which drives an air turbine to rotate and transmits the power to an engine, driving a generator to convert the gas kinetic energy into electrical energy. The first oscillating float of the waterborne oscillating float type wave energy conversion device pushes two piston rods to reciprocate under the action of waves, converting the gas kinetic energy into electrical energy, and a limiter is used to prevent the gas flow rate in the air chamber from being too fast due to too fast water flow, resulting in too high turbine rotation speed and causing motor overload damage.

[0007] Technical Solution: The oscillating floating wind and wave energy power generation device of the present invention includes a wind turbine, a tower barrel, a semi-submersible floating platform, a photovoltaic power generation device, an oscillating float type wave energy conversion device, and a support frame flat plate; the oscillating float type wave energy conversion device includes an underwater oscillating float type wave energy conversion device and a waterborne oscillating float type wave energy conversion device; the semi-submersible floating platform is connected to the oscillating float type wave energy conversion device.

[0008] The underwater oscillating float type wave energy conversion device includes a second oscillating float and a third cylinder; a piston rod is connected between the third cylinder and the second oscillating float, a limiter is provided on the piston rod, the upper end of the third cylinder is open and connected with a ventilation pipe and an air turbine, a second check valve is provided between the ventilation pipe and the third cylinder, and a first check valve is provided between the air turbine and the third cylinder.

[0009] The waterborne oscillating float type wave energy conversion device includes a first oscillating float, a first cylinder and a second cylinder arranged in parallel; there is a fixed rod between the first cylinder and the second cylinder, a rigid rod is provided between the first oscillating float and the fixed rod, a hinged connecting rod is connected between the first piston rod of the first cylinder and the second piston rod of the second cylinder; the fixed rod is connected to the hinged connecting rod, a third check valve is provided between the first cylinder and the second cylinder, and a fourth check valve is provided outside the first cylinder.

[0010] The limiter includes a housing, a first bolt, a second bolt and a nut. The first bolt is screwed with one end of the second bolt under the action of the nut to form a concave semi-cylindrical body tangent to the outer surface of the piston rod.

[0011] A threaded hole for screwing with the first bolt is provided in the second bolt, and the first bolt passes through the threaded hole and is screwed with the nut.

[0012] The photovoltaic power generation device includes a photovoltaic panel and a slide rail assembly. The slide rail assembly includes a support column, a chute and a bolt. A support column slider is provided on the support column, and the support column slider is clamped into the chute.

[0013] The photovoltaic power generation device further includes a universal joint, and the photovoltaic panel and the support column are connected through the universal joint.

[0014] The third check valve includes a conical valve chamber, a hollow connecting piece, and a base, and the base is hinged between the first cylinder and the second cylinder.

[0015] The first check valve and the second check valve are composed of a collar and two petal-shaped valve chambers, and the two petal-shaped valve chambers are connected to the collar by connecting pieces.

[0016] The radius of the petal-shaped valve chamber is greater than the inner circle radius of the collar. When the gas flows in through the ventilation duct, the petal-shaped valve chambers of the first check valve and the second check valve open to allow the gas to flow through.

[0017] The semi-submersible floating platform is a hexagonal semi-submersible floating platform.

[0018] The fourth check valve is provided with a vent port, and a circular gasket and a column are arranged on the vent port, and the circular gasket moves along the column.

[0019] The semi-submersible floating platform is composed of a cavity box body connecting the wave energy conversion device.

[0020] Working principle: When the oscillating floating wave energy power generation device of the present invention works, first, the oscillating floating wave energy power generation device floats on the water surface. The first oscillating float on the water surface undergoes a heaving motion under the action of waves, driving the piston rod hinged to the connecting rod to perform a reciprocating motion, converting the kinetic energy of the waves into the mechanical energy of the piston. The piston pushes the gas in the cylinder to make the air turbine above rotate and transmit the power to the generator through the drive shaft, driving the generator to convert the gas kinetic energy into electrical energy. In the underwater oscillating float type wave energy conversion device, the second oscillating float undergoes a heaving motion with the ocean current, and this motion converts the wave energy into the mechanical energy of the piston motion. The piston moves up and down to drive the air in the cylinder to move upward, and they jointly act on the air turbine on the oscillating float type wave energy converter on the water surface. The first oscillating float of the oscillating float type wave energy converter on the water surface drives two piston rods to perform a reciprocating motion under the action of waves to convert the gas kinetic energy into electrical energy.

[0021] Among them, both of the two oscillating float type wave energy conversion devices contain check valves, so that the air flow is always in the state of flowing upward hingedly to the air turbine, ensuring the unidirectional flow of the gas. The oscillating float type wave energy conversion device increases the contact area with the water surface, which is beneficial to improving the stability of the floating wind turbine; and the combination of the oscillating float type wave energy conversion devices above and below the water surface improves the wave energy capture efficiency. The surface of the semi-submersible floating platform composed of the oscillating float type wave energy conversion device and the hexagonal cavity box body is equipped with a photovoltaic power generation device, which improves the conversion efficiency of the device for solar energy.

[0022] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0023] (1) The present invention makes full use of wave energy for conversion through the cooperation of a semi-submersible floating platform, an oscillating buoy type wave energy conversion device, and an offshore wind turbine; and a plurality of oscillating buoy type wave energy conversion devices are arranged on the semi-submersible floating platform, increasing the contact area between the wave energy conversion device and the water surface and improving the wave energy collection efficiency.

[0024] (2) The oscillating buoy type wave energy conversion device connected to the semi-submersible floating platform uses the heaving motion between the upper and lower water surfaces with the waves and ocean currents to drive the relative motion of the piston rod to drive the air turbine to rotate for conversion. Since the oscillating buoy type wave energy conversion device is arranged on the semi-submersible floating platform below the wind turbine, it has high sea area adaptability.

[0025] (3) A support frame flat plate is arranged between two adjacent oscillating buoy type wave energy conversion devices, increasing the surface area of the semi-submersible floating platform, and then photovoltaic conversion panels are placed, improving the solar energy collection efficiency.

[0026] (4) Different check valves are arranged inside the oscillating buoy type wave energy conversion device above water and the oscillating buoy type wave energy conversion device below water to balance the atmospheric pressure when the piston rod moves, reducing the energy loss during the movement of the piston rod.

[0027] (5) A limiter is installed at the connection between the oscillating buoy and the piston rod of the oscillating buoy type wave energy conversion device below water, thereby preventing the high-energy ocean current from causing the underwater buoy to move too fast, resulting in too fast gas flow rate in the cylinder and too high turbine rotation speed, causing motor overload damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the oscillating floating wind and wave energy power generation device of the present invention;

[0029] Figure 2 is a schematic top view structure diagram of the oscillating floating wind and wave energy power generation device of the present invention;

[0030] Figure 3 is a schematic diagram of the internal structure of the oscillating buoy type wave energy conversion device of the present invention;

[0031] Figure 4 is a schematic diagram of the external structure of the oscillating buoy type wave energy conversion device of the present invention;

[0032] Figure 5 is a schematic diagram of the slide rail assembly structure of the photovoltaic power generation device in the present invention;

[0033] Figure 6 is a schematic diagram of the structure of the limiter in the oscillating buoy type wave energy conversion device of the present invention;

[0034] Figure 7 Schematic diagram of the cavity box structure in the present invention;

[0035] Figure 8 Schematic diagram of the structures of the first check valve and the second check valve in the present invention;

[0036] Figure 9 Schematic diagram of the structure of the third check valve of the floating oscillating wave energy conversion device in the present invention;

[0037] Figure 10 Schematic diagram of the structure of the fourth check valve of the floating oscillating wave energy conversion device in the present invention;

[0038] Figure 11 Partial installation schematic diagram of the first check valve and the second check valve in the present invention. Detailed implementation manners

[0039] As Figure 1 、 Figure 2 shown, the oscillating floating wind and wave energy power generation device of the present invention includes a wind turbine 1, a tower barrel 2, a semi-submersible floating platform 3, a photovoltaic power generation device 4, an oscillating floating wave energy conversion device 5, and a support frame flat plate 7; the oscillating floating wave energy conversion device 5 is composed of an underwater oscillating floating wave energy conversion device and an above-water oscillating floating wave energy conversion device. In this embodiment, the semi-submersible floating platform 3 adopts a hexagonal semi-submersible floating platform. The support frame flat plate 7 adopts a steel frame flat plate. The two oscillating floating wave energy conversion devices are connected by the support frame flat plate 7 and the semi-submersible floating platform 3. The photovoltaic power generation device 4 is located on the support frame flat plate 7.

[0040] The semi-submersible floating platform 3 is located on the water surface and includes a cavity box body, and the cavity box body is located on the water surface, as Figure 7 shown, for connecting the wave energy conversion device to jointly form the semi-submersible floating platform.

[0041] As Figure 3 shown, the underwater oscillating floating wave energy conversion device includes a second oscillating float 5-1-2 and a third cylinder 5-14; a piston rod 5-5-2 is connected between the third cylinder 5-14 and the second oscillating float 5-1-2, a limiter 5-13 is provided on the piston rod 5-5-2, the upper end of the third cylinder 5-14 is open and connected with a ventilation pipe 5-8 and an air turbine 5-10, a second check valve 9 is provided between the ventilation pipe 5-8 and the third cylinder 5-14, and a first check valve 8 is provided between the air turbine 5-10 and the third cylinder 5-14. The piston rod 5-5-2 pushes the gas in the third cylinder 5-14 to make the air turbine 5-10 rotate and transmit the power to the generator 13, converting mechanical energy into electrical energy.

[0042] The ventilation duct 5-8 is located outside the housing of the underwater oscillating float type wave energy conversion device. The air turbine 5-10 is arranged on the surface of the hexagonal semi-submersible floating platform 3, and the base of the air turbine 5-10 is fixed at the connection of two oscillating float type wave energy conversion devices. The ventilation duct 5-8 is arranged on one side of the air turbine 5-10 and is connected to the underwater oscillating float type wave energy conversion device. The third cylinder 5-14 is arranged at the bottom of the oscillating float type wave energy conversion device.

[0043] As Figure 3 shown, the waterborne oscillating float type wave energy conversion device includes a first oscillating float 5-1-1, a first cylinder 5-11 and a second cylinder 5-12 arranged in parallel; there is a fixed rod 5-4 between the first cylinder 5-11 and the second cylinder 5-12, a rigid rod 5-2 is arranged between the first oscillating float 5-1-1 and the fixed rod 5-4, and a hinged connecting rod 5-3 is connected between the first piston rod 5-5-3 of the first cylinder 5-11 and the second piston rod 5-5-1 of the second cylinder 5-12; the fixed rod 5-4 is connected to the hinged connecting rod 5-3, a third check valve 5-7 is arranged between the first cylinder 5-11 and the second cylinder 5-12, and a fourth check valve 5-6 is arranged outside the first cylinder 5-11 and the second cylinder 5-12. The first oscillating float 5-1-1 is fixedly connected to the rigid rod 5-2 and is located on the horizontal plane. The lower part of the first oscillating float 5-1-1 is in seawater, and the upper part is above the seawater and performs heaving motion with the waves.

[0044] As Figure 1 shown, the semi-submersible floating platform 3 is composed of polygonal cylinders and is connected to the oscillating float type wave energy conversion device 5. In this embodiment, a total of 6 oscillating float type wave energy conversion devices 5 are built on the semi-submersible floating platform, and each oscillating float type wave energy conversion device 5 is connected to the semi-submersible floating platform to form an integral body.

[0045] In this embodiment, there is a static connection between a steel frame flat plate and the semi-submersible floating platform between two adjacent oscillating float type wave energy conversion devices 5. Specifically, as Figure 1 shown, a photovoltaic power generation device 4 is installed on the steel frame flat plate. As Figure 5As shown in the figure, the photovoltaic power generation device 4 includes a photovoltaic panel and a slide rail assembly. The slide rail assembly includes a support column 4-4, a chute 4-2, and a bolt 4-3. One end of the photovoltaic conversion panel in the photovoltaic power generation device 4 is hinged to two support columns 4-4. The bottom of the support column 4-4 is equipped with a support column slider 4-1, which is located in two chutes 4-2 on the semi-submersible floating platform. The upper end of the support column 4-4 is hinged to the photovoltaic conversion panel. When the illumination angle changes, the support column slider 4-1 of the support column 4-4 inside the chute 4-2 slides and adjusts according to the incident angle of sunlight, thus playing a role in adjusting the position of the photovoltaic conversion panel. After adjusting the angle, it is fastened and fixed by two bolts 4-3 under the support column slider 4-1.

[0046] As Figure 3 shown in the figure, the second cylinder 5-12 and the first cylinder 5-11 are horizontally and parallelly arranged inside the oscillating float type wave energy conversion device above the water surface. An air turbine 5-10 is installed at the top and riveted and fixed to the part connected to the two oscillating float wave energy conversion devices. When waves come, the first oscillating float 5-1-1 on the water surface makes a heaving motion with the waves, driving the rigid rod 5-2 to rotate, and then pushing the two piston rods to make reciprocating motions.

[0047] The third check valve 5-7 is a conical valve fixedly hinged between the first cylinder 5-11 and the second cylinder 5-12. Specifically, as Figure 9 shown in the figure, it is composed of a conical valve chamber 7-1, a hollow connecting piece 7-2, and a base 7-3, and is used to ensure the one-way flow of gas.

[0048] The working process of the third check valve 5-7 is as Figure 3 shown in the figure. The rigid rod 5-2 is hinged to the platform fixed rod 5-4 and fixedly connected to the vertical connecting rod 5-3. Both piston rods are hinged to the vertical connecting rod 5-3. When the first oscillating float 5-1-1 makes a heaving motion in the vertical direction, the first piston rod 5-5-3 slides inward horizontally, compressing the gas to flow upward. The second piston rod 5-5-1 slides outward horizontally. At this time, the third check valve 5-7 turns to the other side of the second cylinder under the impact of the air flow and seals the first cylinder 5-11 to maintain the one-way flow of gas. The fourth check valve 5-6 is located inside the housing of the first cylinder 5-11 and is used to balance the atmospheric pressure. When the third check valve 5-7 seals the first cylinder 5-11, specifically as Figure 10 shown in the figure, the circular gasket 5-7-3 inside the fourth check valve 5-6 slides from the first position 5-7-4 along the column 5-7-2 to the second position 5-7-1 due to the air pressure difference, so that the external air flow enters the cavity, thus balancing the air pressure in the first cylinder 5-11.

[0049] As Figure 5 and Figure 6As shown in the figure, the stopper 5-13 is located on the piston rod 5-5-2 of the underwater oscillating buoy type wave energy conversion device. The stopper 5-13 is composed of an external housing 5-13-1, the first bolt 5-13-2 and the second bolt 5-13-3 inside, and the nut 5-13-4. Among them, the nut 5-13-4 and the second bolt 5-13-3 are an integral part, and the two bolts cooperate with each other. The head part of the first bolt 5-13-2 is concave in a quarter-circle shape, and a part of the second bolt 5-13-3 connected to the first bolt 5-13-2 is also concave in a quarter-circle shape. When the water flow speed is too fast, to prevent the movement amplitude of the second oscillating buoy 5-1-2 at the bottom from being too large, the stopper 5-13 is loosened through the first bolt 5-13-2, the second bolt 5-13-3 and the nut 5-13-4 inside, so that the stopper loses its fastening function and slides upward according to the actual working conditions. When the stopper 5-13 slides upward to the specified position according to the actual working conditions, a tightening operation is performed, so that the stroke length of the piston rod 5-5-2 sliding in the third cylinder 5-14 is reduced. In this embodiment, a threaded hole for screwing with the first bolt 5-13-2 is provided in the second bolt 5-13-3, and the first bolt 5-13-2 passes through the threaded hole and is screwed with the nut 5-13-4, so that the first bolt 5-13-2 and the second bolt 5-13-3 cooperate with each other.

[0050] Among them, the head of the first bolt 5-13-2 is designed to be concave in a quarter-circle shape. Correspondingly, the part of the second bolt 5-13-3 connected to the first bolt 5-13-2 is also concave in a quarter-circle shape. When the two bolts are tightened and connected, their concave arcs are spliced into a semi-circle, and the semi-circle is tangent to the outer surface of the piston rod 5-5-2 to fasten the piston rod 5-5-2. Due to the fastening effect of the bolts, pressure is generated on the surface of the piston rod. The stopper 5-13 is fastened to the piston rod 5-5-2 due to the pressure, so that the displacement of the disc float 5-1-1 is limited within the set range according to the working conditions. When the water flow speed is too fast, the stroke length of the piston rod 5-5-2 sliding in the third cylinder 5-14 is reduced due to the stopper 5-13, thereby ensuring the stability and reliability of the operation of the entire system and preventing the gas flow rate in the air chamber from being too fast due to too fast water flow, resulting in a relatively high speed of the turbine and causing motor overload damage.

[0051] As Figure 11As shown, in the underwater oscillating buoy wave energy conversion device, the second check valve 9 and the ventilation duct wall 11, as well as the first check valve 8 and the cylinder wall 12, are all statically connected. The check valve is fixedly connected to the ventilation duct. Through high-performance silicone sealing materials, while ensuring the unidirectional flow of air, vibration, noise and energy loss are reduced. It undergoes heaving motion when the ocean current passes by, and the connected piston rod makes a reciprocating motion during the motion. When the piston rod 5-5-2 moves downward, at this time the first check valve 8 is in the closed state and the second check valve 9 is in the open state, as Figure 3 shown. The gas in the cavity flows in from the ventilation duct 5-8 to balance the atmospheric pressure in the cavity. When the piston rod moves upward, the first check valve 8 is in the open state and the second check valve 9 is in the closed state, so that the piston compresses the gas to the air turbine 5-10, driving the air turbine 5-10 to rotate to convert wave energy into mechanical energy, and the air turbine 5-10 converts mechanical energy into electrical energy.

[0052] As Figure 11 shown, the first check valve 8 and the second check valve 9 inside the underwater oscillating buoy wave energy conversion device have a structure as Figure 8 shown. The first check valve 8 and the second check valve 9 are both composed of two petal-shaped valve chambers 5-9-2 and a collar 5-9-1. The two petal-shaped valve chambers 5-9-2 are connected by a connecting piece 5-9-3. The radius of the petal-shaped valve chamber 5-9-2 is greater than the inner circle radius of the collar 5-9-1. The second check valve 9 and the ventilation duct 5-8, as well as the first check valve 8 and the third cylinder 5-14, are all statically connected. When the gas flows in through the ventilation duct 5-8, the petal-shaped valve chamber 5-9-2 in the second check valve 9 opens to allow the gas to flow through; when the gas flows in the reverse direction, the gas pressure causes the surface of the valve flap 5-9-2 to be pressed against the annular surface of the collar 5-9-1 to prevent the gas from flowing through.

Claims

1. An oscillating floating wind and wave energy power generation device, characterized in that: The invention comprises a wind turbine (1), a tower (2), a semi-submersible floating platform (3), a photovoltaic power generation device (4), an oscillating buoy wave energy conversion device (5) and a support frame plate (7); the oscillating buoy wave energy conversion device (5) comprises an underwater oscillating buoy wave energy conversion device and an above-water oscillating buoy wave energy conversion device; the semi-submersible floating platform (3) is connected to the oscillating buoy wave energy conversion device (5); The underwater oscillating float type wave energy conversion device comprises a second oscillating float (5-1-2) and a third cylinder (5-14); a piston rod (5-5-2) is connected between the third cylinder (5-14) and the second oscillating float (5-1-2), a stopper (5-13) is provided on the piston rod (5-5-2), the upper end of the third cylinder (5-14) is open and connected to a ventilation pipe (5-8) and an air turbine (5-10), a second check valve (9) is provided between the ventilation pipe (5-8) and the third cylinder (5-14), and a first check valve (8) is provided between the air turbine (5-10) and the third cylinder (5-14); The above-water oscillating float type wave energy conversion device comprises a first oscillating float (5-1-1), a first cylinder (5-11) and a second cylinder (5-12) arranged in parallel; a fixed rod (5-4) is provided between the first cylinder (5-11) and the second cylinder (5-12); a rigid rod (5-2) is provided between the first oscillating float (5-1-1) and the fixed rod (5-4); a hinged connecting rod (5-3) is provided between the first piston rod (5-5-3) of the first cylinder (5-11) and the second piston rod (5-5-1) of the second cylinder (5-12); the fixed rod (5-4) is connected to the hinged connecting rod (5-3); a third check valve (5-7) is provided between the first cylinder (5-11) and the second cylinder (5-12); and a fourth check valve (5-6) is provided on the first cylinder (5-11); The limiter (5-13) comprises a housing (5-13-1), a first bolt (5-13-2), a second bolt (5-13-3) and a nut (5-13-4); the first bolt (5-13-2) is screwed to one end of the second bolt (5-13-3) under the action of the nut (5-13-4) to form a concave semi-cylinder tangent to the outer surface of the piston rod (5-5-2).

2. The oscillating floating wind wave energy power generation device according to claim 1, characterized in that: A threaded hole is provided in the second bolt (5-13-3) and is screwed to the first bolt (5-13-2). The first bolt (5-13-2) passes through the threaded hole and is screwed to the nut (5-13-4).

3. The oscillating floating wind wave energy power generation device according to claim 1, characterized in that: The photovoltaic power generation device (4) comprises a photovoltaic panel and a slide rail assembly, the slide rail assembly comprises a support column (4-4), a slide groove (4-2) and a bolt (4-3), the support column (4-4) is provided with a support column slider (4-1), and the support column slider (4-1) is inserted into the slide groove (4-2).

4. The oscillating floating wind wave energy power generation device according to claim 3 is characterized in that: It also comprises a universal joint, and the photovoltaic panel and the supporting column (4-4) are connected via the universal joint.

5. The oscillating floating wind wave energy power generation device according to claim 1, characterized in that: The third check valve (5-7) comprises a conical valve chamber (7-1), a hollow connecting piece (7-2) and a base (7-3), wherein the base (7-3) is hinged between the first cylinder (5-11) and the second cylinder (5-12).

6. The oscillating floating wind wave energy power generation device according to claim 1, characterized in that: The first check valve (8) and the second check valve (9) are composed of a sleeve ring (5-9-1) and two flap-shaped valve chambers (5-9-2), and the two flap-shaped valve chambers (5-9-2) are connected to the sleeve ring (5-9-1) by a connecting piece (5-9-3).

7. The oscillating floating wind wave energy power generation device according to claim 1, characterized in that: The radius of the flap-shaped valve chamber (5-9-2) is greater than the inner circle radius of the collar (5-9-1).

8. The oscillating floating wind wave energy power generation device according to claim 1, characterized in that: The semi-submersible floating platform (3) is a hexagonal semi-submersible floating platform.

9. The oscillating floating wind wave energy power generation device according to claim 1, characterized in that: The fourth check valve (5-6) is provided with a vent, and a circular gasket (5-7-3) and a column (5-7-2) are arranged on the vent, and the circular gasket (5-7-3) moves along the column (5-7-2).

10. The oscillating floating wind wave energy power generation device according to claim 1, characterized in that: The semi-submersible floating platform (3) is composed of a hollow box body connected to a wave energy conversion device.